제출 #942682

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
942682		fdnfksd	Sum Zero (RMI20_sumzero)	C++14	100 / 100	449 ms	18168 KiB

sumzero

#include<bits/stdc++.h>
#define pb push_back
#define pli pair<int,int>
#define fi first
#define se second
#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
using ll=long long;
const ll maxn=4e5+100;
const ll inf=1e18;
const ll mod=1e9+7;
ll n;
pli a[maxn];
int nxt[maxn],mn[maxn],p[maxn][6],pw[10];
void solve()
{
    cin >> n;
    for(int i=1;i<=n;i++) cin >> a[i].fi,a[i].fi+=a[i-1].fi,a[i].se=i;
    sort(a,a+n+1);
    for(int i=0;i<=n;i++)
    {
        if(i<n&&a[i].fi==a[i+1].fi) nxt[a[i].se+1]=a[i+1].se;
        else nxt[a[i].se+1]=n+1;
    }
    nxt[n+1]=n+1;
    mn[n+1]=n+1;
    for(int i=n;i>=1;i--)
    {
        if(nxt[i]<nxt[mn[i+1]]) mn[i]=i;
        else mn[i]=mn[i+1];
    }
    for(int i=n;i>=1;i--)
    {
        ll u=nxt[i];
        if(u==n+1)
        {
            p[i][0]=n+1;
        }
        else
        {
            u++;
            p[i][0]=mn[u];
        }
    }
    p[n+1][0]=n+1;
    for(int j=1;j<=5;j++)
    {
        for(int i=1;i<=n+1;i++)
        {
            ll x=i;
            for(int k=0;k<10;k++)
            {
                x=p[x][j-1];
            }
            p[i][j]=x;
        }
    }
    pw[0]=1;
    for(int i=1;i<=6;i++) pw[i]=pw[i-1]*10;
    ll q;
    cin >> q;
    for(int i=1;i<=q;i++)
    {
        ll l,r,ans=0;
        cin >> l >> r;
        l=mn[l];
        if(nxt[l]>r) {cout << 0 << '\n';continue;}
        else ans++;
        //cout << nxt[l] << '\n';
        for(int j=5;j>=0;j--)
        {
            for(int k=0;k<9;k++)
            {
                if(nxt[p[l][j]]<=r)
                {
                    l=p[l][j];
                    ans+=pw[j];
                }
                else break;
            }
        }
        cout << ans << '\n';
    }
}
int main()
{
    fastio
    //freopen(TASKNAME".INP","r",stdin);
    //freopen(TASKNAME".OUT","w",stdout);
    solve();
}

• Subtask 1: 22 / 22
• Subtask 2: 39 / 39
• Subtask 3: 39 / 39